M4 rifle References Images M4 rifle firearm Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: M16 rifle…had largely transitioned to the M4, a carbine based on the AR-15 platform, as its primary infantry weapon. Read More…had largely transitioned to the M4, a carbine based on the AR-15 platform, as its primary infantry weapon. Read More